Mail*Link(r) SMTP FWD>ASSY-Flagging John -- It is my recollection that "icicles, solder spikes, etc" are acceptable as long as they do not exceed the lead protrusion, the "minimum" electrical spacing (even if the bent toward an adjacent "uncommon" conductor), and are "firmly attached" reqirements; they are acceptable. For high electrical voltages they are a corona innitiation concern, but this should be addressed on the assembly drawing. Personally, they are a personnel handling safety problem. Ralph Hersey e-mail: [log in to unmask] -------------------------------------- Date: 5/10/96 10:24 AM From: John McGee Happy Friday Technetters- I've been tasked with justifying the enforcement of a long established internal requirement, here at PBNI. For as long as I can recall, we have been considering solder flagging (aka icicles, solder spikes) a rejectable condition, even when a solitary occurrence of as little as 0.8 mm. (We based this rejection upon workmanship standards that we adopted from a sister organization with a much more Class 3 and military orientation). As we are manufacturing Class 2 products, and are re-evaluating the adopted requirements, this 'reject' comes into question. I'm reviewing ANSI/J-STD-001A and IPC-A-610B this morning, I find no reference to this condition other than that shown in Figure 4-17 of the latter. I certainly don't object to loosening up on our present standard if it is not justifiable, but I can't help the feeling that I'm missing something. Am I ? An anticipatory ...Thanks ! ------------------ RFC822 Header Follows ------------------ Received: by quickmail.llnl.gov with SMTP;10 May 1996 10:22:31 -0700 Received: from ipc.org by simon.ipc.org via SMTP (940816.SGI.8.6.9/940406.SGI) id MAA21851; Fri, 10 May 1996 12:17:19 -0700 Resent-Date: Fri, 10 May 1996 12:17:19 -0700 Received: by ipc.org (Smail3.1.28.1 #2) id m0uHuQR-0000GTC; Fri, 10 May 96 10:48 CDT Resent-Sender: [log in to unmask] Old-Return-Path: <simon.ipc.org!pbni.attmail.com!PBN!PBN1!JMcGee> Date: Fri, 10 May 1996 11:29:00 +0000 From: simon.ipc.org!pbni.attmail.com!PBN!PBN1!JMcGee (John McGee) Subject: ASSY-Flagging To: [log in to unmask] Cc: pbni.attmail.com!PBN!PBN1!pbni!PBN!PBN1!SKelly Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <MS-MAILG-2.00-Note-pbni-JMcGee-0831743471> Resent-Message-ID: <"Wap0F2.0.sXC.kKsan"@ipc> Resent-From: [log in to unmask] X-Mailing-List: <[log in to unmask]> archive/latest/4045 X-Loop: [log in to unmask] Precedence: list Resent-Sender: [log in to unmask]